Impact of shadow file 'lastchg' parameter NULL or 0?

10 More Discussions You Might Find Interesting

1. Solaris

Passwd -l or -u modifies lastchg field in /etc/shadow file

Hi, I have a Solaris 10 box where password aging is not functioning properly. Using the passwd command with the -l or -u options causes the lastchg field in the /etc/shadow file to be modified. Therefore, if a user's password is set to expire in 90 days and they are 1 day away, all they have...

2. Shell Programming and Scripting

How to get the parameter value from the parameter file in perl?

hi all, i have a parameter file of following format, i want a method which can get the value of specific parameter. parameter file format: <Parameter Name="FileLocationWindows"> <Description> The directory location of the logger file. ...

3. UNIX for Dummies Questions & Answers

Shadow file help

As a part of linux hardening In shadow file all Application accounts which are not locked must contain only an asterisk �*� in the Passwd field. But how would i do it by using command? Is there any way other than modifying shadow file to accomplish this task?

4. Solaris

delete shadow file

hi everybody i 'm beginner in solaris and by mistake i removed shadow file any one can help me to restore it from passwd file

5. Shell Programming and Scripting

Shadow file

Hi, In shadow file smithj:Ep6mckrOLChF.:10063:0:99999:7::: 3rd Field 10063 indicates the number of days (since January 1, 1970) since the password was last changed. I want to get the result with script the date on which the password was last changed in YYYY-MM-DD format. can...

6. UNIX for Dummies Questions & Answers

Shadow File

I see conflicting definitions for the shadow file. For Solaris, what are the fields please? Thanks.

7. UNIX for Advanced & Expert Users

/etc/shadow file....

Does anyone know what "!!" represents in the password field of the /etc/shadow file? :confused:

8. Solaris

LK in /etc/shadow file

my etc/shadow file showing *LK* for a particular user.. can u tell me under which circumstances a user is locked

9. UNIX for Advanced & Expert Users

shadow file

what does 'x' in the encrypted password field in /etc/shaodw file represent?

10. UNIX for Dummies Questions & Answers

shadow file

Sirs, What is a shadow file,How it be usefull.For my project i have to keep the password in shawdow file also i am doing in php how can i do it. Thanks in advance, ArunKumar

LEARN ABOUT V7

pwconv

pwconv(1M)                                                System Administration Commands                                                pwconv(1M)

NAME

       pwconv - installs and updates /etc/shadow with information from /etc/passwd

SYNOPSIS

       pwconv

DESCRIPTION

       The pwconv command creates and updates /etc/shadow with information from /etc/passwd.

       pwconv relies on a special value of 'x' in the password field of /etc/passwd. This value of 'x' indicates that the password for the user is
       already in /etc/shadow and should not be modified.

       If the /etc/shadow file does not exist, this command will create /etc/shadow with  information  from  /etc/passwd.  The  command  populates
       /etc/shadow  with  the  user's  login  name,  password,  and  password  aging  information. If password aging information does not exist in
       /etc/passwd for a given user, none will be added to  /etc/shadow. However, the last changed information will always be updated.

       If the  /etc/shadow file does exist, the following tasks will be performed:

                Entries that are in the  /etc/passwd file and not in the /etc/shadow file will be added to the /etc/shadow file.

                Entries that are in the  /etc/shadow file and not in the /etc/passwd file will be removed from /etc/shadow.

                Password attributes (for example, password and aging information)  that exist in an /etc/passwd entry will be moved to the  corre-
                sponding entry in  /etc/shadow.

       The pwconv command can only be used by the super-user.

FILES

       /etc/opasswd

       /etc/oshadow

       /etc/passwd

       /etc/shadow

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       passwd(1), passmgmt(1M), usermod(1M), passwd(4), attributes(5)

DIAGNOSTICS

       pwconv exits with one of the following values:

       0        SUCCESS.

       1        Permission denied.

       2        Invalid command syntax.

       3        Unexpected failure.  Conversion not done.

       4        Unexpected failure.  Password file(s) missing.

       5        Password file(s) busy.  Try again later.

       6        Bad entry in /etc/shadow file.

SunOS 5.10                                                          9 Mar 1993                                                          pwconv(1M)

UNIX for Dummies Questions & Answers